public class Example04 {
    public static void main (String[] args) {
        int x = 12; //定义变量x
        {
            int y = 96; //定义变量y
            System.out.println ("x is " + x); //访问变量x
            System.out.println ("y is " + y); //访问变量y
        }
        //访问变量x, 为变量y赋值
        System.out.println ("x is " + x); //访问变量x
    }
}
